Omron Forums Support Posted March 14, 2022 Share Posted March 14, 2022 For NL200, NL220 and NL220F 1. With power off to the controller, press the SEL and down-arrow buttons. 2. Apply power while pressing the buttons. 3. Hold the buttons until you see the letters 'COL' on the screen. Quote Link to comment Share on other sites More sharing options...
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